PHASe Subsystem
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The primary purpose of this command is to establish a zero-point between two connected instruments. For chan-
nel-to-channel operation on a two-channel instrument, use
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Setting a new zero-phase reference point means that the value subsequently returned by a
query com-
mand is reset to "0", but the output waveform itself does not change.
[SOURce[1|2]:]PHASe:SYNChronize
Simultaneously resets all phase generators in the instrument, including the modulation phase generators, to establish
a common, internal phase zero reference point. This command does not affect
setting of either channel; it
simply establishes phase difference between channels as the sum of
and
instead of an arbi-
trary amount.
Parameter
Typical Return
(none)
(none)
Reset all phase generators:
PHAS:SYNC
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SOURce1 and SOURce2 mean nothing for this command.
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This command breaks the phase relation with another instrument, because it resets the phase generators.
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In single channel instruments, this synchronizes the main channel with the internal modulation generator.
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You can synchronize the phase between the primary signal and the
SUM
signal by sending
after setting the functions for the primary signal and the
SUM
signal. Otherwise, the phase
between the two signals is arbitrary.
[SOURce[1|2]:]PHASe:UNLock:ERRor:STATe {ON|1|OFF|0}
[SOURce[1|2]:]PHASe:UNLock:ERRor:STATe?
Enables or disables the generation of an error if the phase-lock is ever lost by the instrument timebase. The instru-
ment uses one timebase for both channels.
Parameter
Typical Return
{ON|1|OFF|0}, default OFF
0 (OFF) or 1 (ON)
Enable the generation of phase-lock errors:
PHASe:UNLock:ERRor:STATe ON
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SOURce1 and SOURce2 mean nothing for this command.
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If the phase-lock is lost and the error is enabled, a "Reference phase-locked loop is unlocked" error is generated.
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Volatile setting, lost on power cycle.
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A faulty reference signal applied to the
10 MHz IN
connector may generate many error messages.
266
Agilent 33500 Series Operating and Service Guide
